Should be closest to passenger side
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the front cylinder closest to the radiator is the number one.
Number one is ALWAYS the first cylender on the front left side of the engine......
Passenger side, front of engine.
A cylinder has zero corners.
Number one cylinder is the back (by the fire wall ) left hand cylinder as you are facing, and looking into the engine compartment from the front of the vehicle. The even numbered cylinders are next to the radiator, and the odd numbered cylinders are next to the firewall.